Chemical fire-extinguisher.



No. 724,440. I PATENTED APR. '7, 1903.

CHEMICAL F1111: E'XTINGUISHER.

APPLIoATIoN FILED oc'r. zz, 189s. RBNEWED JULY a, 1902. H0 MODEL. `1 SHEETS-SHEET 1.

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No. 724,440. PATENT-5D APR. 7, 1903.

G. W. oooN. CHEMICAL FIRE BXTINGUISHER.

v APPLICATION Hman 00T. 2z, 1898. RENEWED JULY 9, 1902. No MODEL. 2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

GUSTAVUS W. COON, OF VASI-IINGTON, DISTRICT OF COLUMBIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO F. S. BRIGHT, OF VASHINGTON, DISTRICT OF COLUMBIA.

CHEIVIICAL FIRE-EXTINGUISHER.

SPECIFICATION forming part of Letters Patent No. 724,440, dated April 7, 1903. Application filed ctoberf22, 1898. Renewed .Tuly 9, 1902. Serial No. 114,977. (No model.)

To @ZZ whom it may concern.'

Be it known that I, GUsTAvUs W. CooN, a citizen of the United States, residing at the city of Washington, in the District of Columbia, have invented a certain new and useful Y narnely, of frangible material, to be broken so4 as to discharge its contents, and of non-franzo gible material, from which the acid is released by inverting the vessel. My invention relates particularly to this last-named class.

In certain of the tire-extinguishers of this sort with which I am familiar the acid has been z5 released in bulk and at once, with the result that the gas has been generated sorapidly as to fail to commingle with the water and has expelled the water without imparting to it the desired combination, or else in those cases 3o Where the exit has been next to the acid end ofthe extinguisher the gas in a practically, free state has escaped, and thus the appara and this other end may project above its ad-V Y tus rendered useless.

The object of my invention is to provide an`v 3 5 acid vessel from which the acid escapes slowlyy or retardedly and is directed into the body of.

the water Without the possibility of its free escape, thus charging or insuring the impregnation of the Water.

annular acid-container having a restricted discharge-orifice and provided with a tube open at both ends and extending from the discharge-orifice through to the other end of the container, so that not only will there be an escape for the acid and gas around the exterior of the container, but also through its center, and thus the commingling of the acid or gas and Water will be insured.

stopper in elevation.

In carrying out -my invention I employ an` In the accompanying drawings, illustrating 5o my invention, in the several figures of which like parts are similarly designated, Figure l is a vertical section of one form of tire-extinguisher in normal position of disuse. Fig. 2 is a top planfview, on a larger scale, of the acid-container. Fig. 3 is a vertical section of a modification, and Fig. 4 is a perspective view of a hanger used in the modification shown in Fig. 3. Fig. 5 is a vertical section of a modified form of acid-container With the Fig. Gis a vertical sec-l tion showing the apparatus of Fig. l inverted and in position for charging. Fig. 7 is a perspective view showing the parts of my container detached, the lower portion of the body of the vessel being broken away. v

The vessel or tank a for containing the alkaline Water may be of any approved construction and supplied With an educt-tube b, having a hose-nipple c and a strainer cl. This vessel also has a neck or collar e, provided with a flange e and an external screw-thread. f

f is a screw-cap fitted to the neck or collar e in any suitable manner. 'y

The acid vessel g may be made as a tube, with one end entirely open andthe otherend closed by the flange g' and having at its open end an external screw -thread g2. Within this tube g is a second concentric tube h, united vto the bottom g by a duid-tight joint and open at that end and also at its other end,

jacent end of the tube g.A The open end of the tube g is closed in part by a screw-cap c', havinga central orifice 7l', which is constructed with a number of lugs 2, which, as shown more especially in Fig. 2, come into contact with the inner tube h. The orice in the cap il is of greater diameter than the external diameter of the tube h and enough greater to provide an opening j between the said tube h and the Wall of the orifice in the cap t', as shown in Fig. 2, and this opening connects with the annular chamber formed by the tube g and its internal tube h and bottom g', the said openingj, with the obstructions 2 therein, constituting a retarding or slow-feed outlet for the contents of the acidcontaining vessel. rlhe cap t' is provided with radial lugs 7c, projecting from its diameter and cooperating with the flange eto support the acid-containing vessel in the vessel a, the said cap being of suiciently smaller diameter than the circular opening'in the vflange e to afford passages from the neck of the vessel a into the body thereof.

eral parts arranged as shown in Fig. l, when-- ever the extinguisher is to be used it is inverted, as in Fig. 6, and thereupon the stopper Z falls away from the acid vessel and the acid escapes in a slow or retarded manner through the obstructed orifice or openingj and, mingling with the alkaline water, gas is lss generated, which escapes around the acid vessel into the water and also rises through the tube h, and thus being distributed equably and slowly through the Water the water is charged or impregnated before sufficient pressure is obtained to eject it from the extinguisher. In this way alldanger of escape of free gas and explosion of the vessel by too rapid generation of the gas is avoided.

Myinvention is susceptible of various modifications, some of which are as follows: The acid vessel may be suspended by a skeleton hanger or spider n, Fig. et, Which, as shown in Fig. 3, has the L-shaped arms n in engagement with the iiange e of the collar or neck of the vessel a, and the ring 'n2 engages the shoulder n3, formed by the screw-thread g2 and cap t'. Instead of having the tube h extend beyond the tube g it may be substantially level with its top, and itsend and the 4orifice in the cap may be beveled, as shown in Fig. 5, and a tapering stopper o may be used for temporarily closing the outlet. This construction affords a sort of knife-edge outlet through the acid Vessel, which, While it restricts or retards the egress of the acid and insures a slow feed, subserves the further function of minifying the generation of gas and directing its escape through the central tube h'. These and other modifications are included as within my invention.

It will be observed that thecentral tube h extends entirely through the outer tube and is open at bothv ends, and this construction is followed in order to insure the retarding of the escape of the acid and to effect the escape of the gas in a number of directions, and thus insure the impregnation of the water, and experience has demonstrated that these results follow from the construction illustrated and described herein.

I. In a chemical fire-extinguisher, an acid vessel of annular form, and having the central tube opening at both ends outside of the acid-containing chamber, a cap applied to the acid vessel with a restricted and slow-feed acid-exit surroundingone end of the central tube, and a gravity-stopper therefor, substantially as described.

2. In a chemical tire-extinguisher, an acid vessel comprising an outer tube open at one end and closed at the other, an inner tube extending entirely through the outer tube and open at both ends, and a cap applied to the open end of the outer tube vand forming a restricted slow-feed acid-exit around the inner tube, substantially as described.

3. In a chemical fire-extinguisher, an acid vessel comprising an outer tube, and an iny ner tube open at both ends, the outer tube being closed at one end between itself and the inner tube and having an obstructed opening at the other end and between itself and the inner tube, substantially as described.

4. In a chemical fire-extinguisher, an acid vessel comprising an outer tube, a concentric inner tube open at both ends, the outer tube being closed between itself and theinner tube at one end, and a cap applied to the other end of the outer tube and having an obstructed orifice surrounding the inner tube, substantially as described.

5. In a chemical tire-extinguisher, an acid vessel comprising an outer tube, a concentric inner tube open atboth ends, the outer tube being closed between itself and the inner tube at one end, a cap, and a loose stopper to close the acid-exit and to fall away therefrom by gravity when inverted, substantially as described.

In testimony whereof I have hereunto set my hand this 22d day of October, A. D. 1898.

GUSTAVUS W. COON.

Witnesses:

CEAS. S. BRADLEY, WM. H. FINCKEL. 

